Mels you can use the application called "AnyDVD" that will let you watch any region on your DVD Rom.
http://www.afterdawn.com/software/vi...ers/anydvd.cfm
It's a trial version I think, but can be found in all the usual places.
You can try a hacked firmware too. Check out this forum
http://forum.rpc1.org/index.php
The Killer is great. It's the second John Woo movie I had ever seen. The first being "A Better Tomorrow", which I believe is the first movie to portray Chow Yun Fat as a god-like gunfighter, ushering in the "Heroic Bloodshed" genre of Hong Kong films.
"A Better Tomorrow 2" is a good one too. Though Chow's character Mark died in the first one, his twin brother shows up just in time to kill everyone. If you've ever seen "True Romance", you can see a clip of it on a television Patricia Arquette is watching just as Christian Slater is leaving to confront her ex-pimp.
If you like "The Killer", you should check out Woo's best, and possibly THE best gunplay flick of all time, "Hardboiled". Words can not express the level of over the top violence and hot lead that is contained in this movie. I think it's out of print, but easily available online. I have also heard rumors it's going to be widely available again soon, if not already.
I've got Versus as well. Some people say it's just an excuse to mix martial arts, guns, and zombies. I say, "Yeah.. and.. your point?" A killer flick. I love it. There's an "Ultimate Versus" edition available in region 3, but with no english subtitles. You can, however, find it where you would normally find divx DVDrips, and english subs are out there too. They got the cast back together to shoot another 20 minutes or so of gunplay and zombies, so if you've seen it before you can easily watch the Ultimate version without subs. I'm thinking of ordering it myself, because I don't think there's going to be a region 1 release.
I've got my own views on Kill Bill and Tarantino. I'll save them for some other time.